USB
Universal Serial Bus (USB) is a serial bus standard to interface devices.
Hisense brand models use the USB interface solely for After-Sales Service use.
It was originally designed for personal computers, but it has become commonplace on Consumer Electronic products such as handheld devices, memory devices, video game consoles, PDAs, and portable media players.A major component in the legacy-free PC, USB was devised to help retire all serial and parallel ports on personal computers since these were not standardized and required a multitude of device drivers to be developed and maintained.